Euro Pop song

I am very hopeful that someone somewhere out there will be able to tell me the name of this song (and if it is on YouTube!) Years ago in the late 1970's I was on holiday in Spain and there was this song that they kept playing in the disco - being only 17 at the time I was too shy to ask the DJ what it was - and since I started skiing in the mid-80's I seem to hear it at virtually every ski resort that plays Euro pop type music. Try as I might I cannot find out. It has a conga type rhytym and goes through all different types of beat (part of it I think they are singing about Zarzuela - which is a Spanish casserole!!!!) I last heard it in Hochfilzen at the Biathlon a few years ago, and everyone of all nationalities were congaring (sic)round to it! It is a happy tune - and I would be dead happy if someone knows it! - as it has bugged me for about 30 years!!!